Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This science fair project idea investigates whether plants can survive being frozen.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

This science fair project idea produces varying pitches of sound.